Mercurial > gnulib
view tests/test-trunc-ieee.c @ 36940:c741bc27922a
maint: update all copyright year number ranges
Run "make update-copyright". Compare to commit 1602f0a from last year.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
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date | Tue, 01 Jan 2013 00:50:58 +0000 |
parents | 7e22ccf185b0 |
children | 344018b6e5d7 |
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/* Test of rounding towards zero. Copyright (C) 2010-2013 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <config.h> #include <math.h> #include "isnand-nolibm.h" #include "minus-zero.h" #include "infinity.h" #include "nan.h" #include "macros.h" int main () { /* See IEEE 754, section 6.3: "the sign of the result of the round floating-point number to integral value operation is the sign of the operand. These rules shall apply even when operands or results are zero or infinite." */ /* Zero. */ ASSERT (!signbit (trunc (0.0))); ASSERT (!!signbit (trunc (minus_zerod)) == !!signbit (minus_zerod)); /* Positive numbers. */ ASSERT (!signbit (trunc (0.3))); ASSERT (!signbit (trunc (0.7))); /* Negative numbers. */ ASSERT (!!signbit (trunc (-0.3)) == !!signbit (minus_zerod)); ASSERT (!!signbit (trunc (-0.7)) == !!signbit (minus_zerod)); /* [MX] shaded specification in POSIX. */ /* NaN. */ ASSERT (isnand (trunc (NaNd ()))); /* Infinity. */ ASSERT (trunc (Infinityd ()) == Infinityd ()); ASSERT (trunc (- Infinityd ()) == - Infinityd ()); return 0; }